243031230451 has 16 divisors (see below), whose sum is σ = 254625297408. Its totient is φ = 231523538400.

The previous prime is 243031230439. The next prime is 243031230479. The reversal of 243031230451 is 154032130342.

It is a happy number.

It is not a de Polignac number, because 243031230451 - 2⁹ = 243031229939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243031230151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17264746 + ... + 17278816.

It is an arithmetic number, because the mean of its divisors is an integer number (15914081088).

Almost surely, 2^243031230451 is an apocalyptic number.

243031230451 is a deficient number, since it is larger than the sum of its proper divisors (11594066957).

243031230451 is a wasteful number, since it uses less digits than its factorization.

243031230451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17082.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 243031230451 its reverse (154032130342), we get a palindrome (397063360793).

The spelling of 243031230451 in words is "two hundred forty-three billion, thirty-one million, two hundred thirty thousand, four hundred fifty-one".